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对三种主要水稻土测定结果表明,紫云英与黑麦草混播,其腐殖化系数比各自单播提高25.7%和11.8%.脱潜水稻土、淹育水稻土和潴育水稻土等三种吨粮田的土壤碳年矿化量分别为1806.0、1529.6和1548.0kgha~(-1),平均为1627.5kgha~(-1).单施化肥时,只是归还根茬碳728.9kgha~(-1),尚相差898.7kgha~(-1),而化肥加有机肥处理者,则可维持土壤碳素平衡.施化肥年平均亩产量虽可超一吨,但化肥加施有机肥可比单施化肥增产9.1%.
The results of three main paddy soils showed that the mixed culture of Astragalus sinicus and ryegrass increased the humification coefficient by 25.7% and 11.8% respectively than that of unimplantation. The soil release of paddy soil, submerged paddy soil and paddy soil The annual mineralized amount of carbon in soils was 1806.0, 1529.6 and 1548.0 kgha ~ (-1), respectively, with an average of 1627.5 kg ha ~ (-1) .Under application of chemical fertilizers, only 728.9 kg ha ~ 1), while the difference is 898.7kgha ~ (-1), while the chemical fertilizers and organic manure treatment can maintain the soil carbon balance. Although the annual average yield per mu of chemical fertilizers can exceed one ton, Fertilizer yield 9.1%.